linux-kernel - [PATCH v2] pwm: core: Use devm

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Message-ID: <1389077147-15487-1-git-send-email-Li.Xiubo@freescale.com>
Date:	Tue, 7 Jan 2014 14:45:47 +0800
From:	Xiubo Li <Li.Xiubo@...escale.com>
To:	<thierry.reding@...il.com>
CC:	<joe@...ches.com>, <linux-pwm@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, Xiubo Li <Li.Xiubo@...escale.com>
Subject: [PATCH v2] pwm: core: Use devm_kcalloc instead of kzalloc

Use devm_kcalloc instead of kzalloc to free automatically and make
the cleanup paths simpler and the code slightly shorter.

Signed-off-by: Xiubo Li <Li.Xiubo@...escale.com>
---

Changed in v2:
- Use devm_kcalloc instead of devm_kzalloc.

Changed in v1:
- Use devm_kzalloc instead of kzalloc.




 drivers/pwm/core.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/pwm/core.c b/drivers/pwm/core.c
index 2ca9504..75220e8 100644
--- a/drivers/pwm/core.c
+++ b/drivers/pwm/core.c
@@ -80,7 +80,6 @@ static void free_pwms(struct pwm_chip *chip)
 
 	bitmap_clear(allocated_pwms, chip->base, chip->npwm);
 
-	kfree(chip->pwms);
 	chip->pwms = NULL;
 }
 
@@ -245,7 +244,8 @@ int pwmchip_add(struct pwm_chip *chip)
 	if (ret < 0)
 		goto out;
 
-	chip->pwms = kzalloc(chip->npwm * sizeof(*pwm), GFP_KERNEL);
+	chip->pwms = devm_kcalloc(chip->dev, chip->npwm,
+				  sizeof(*pwm), GFP_KERNEL);
 	if (!chip->pwms) {
 		ret = -ENOMEM;
 		goto out;
-- 
1.8.4


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